/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.catalina.authenticator;

import org.apache.catalina.*;

import java.io.Serializable;

public class SingleSignOnListener implements SessionListener, Serializable {

	private static final long serialVersionUID = 1L;

	private final String ssoId;

	public SingleSignOnListener(String ssoId) {
		this.ssoId = ssoId;
	}

	@Override
	public void sessionEvent(SessionEvent event) {
		if (!Session.SESSION_DESTROYED_EVENT.equals(event.getType())) {
			return;
		}

		Session session = event.getSession();
		Manager manager = session.getManager();
		if (manager == null) {
			return;
		}
		Context context = (Context) manager.getContainer();
		Authenticator authenticator = context.getAuthenticator();
		if (!(authenticator instanceof AuthenticatorBase)) {
			return;
		}
		SingleSignOn sso = ((AuthenticatorBase) authenticator).sso;
		if (sso == null) {
			return;
		}
		sso.sessionDestroyed(ssoId, session);
	}
}
